13 6
Different liquids are added to food as it passes through the digestive system.
saliva
gastric juice
bile from the liver secretions from the pancreas and small intestine
(a) One of the liquids released into the digestive system contains no enzymes. Put a tick (✓) in the box next to this liquid. saliva gastric juice bile from the liver secretions from the pancreas and small intestine [1] (b) Saliva and gastric juice have different pH values. Explain why this is important. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... .............................................................................................................................................. [2]
Š OCR 2015
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